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Memorias de investigación
Artículos en revistas:
Ultra high temperature latent heat energy storage and thermophotovoltaic energy conversion
Año:2016
Áreas de investigación
  • Energía solar,
  • Generación fotovoltaica
Datos
Descripción
A conceptual energy storage system design that utilizes ultra high temperature phase change materials is presented. In this system, the energy is stored in the form of latent heat and converted to electricity upon demand by TPV (thermophotovoltaic) cells. Silicon is considered in this study as PCM (phase change material) due to its extremely high latent heat (1800 J/g or 500 Wh/kg), melting point (1410 ?C), thermal conductivity (~25 W/mK), low cost (less than $2/kg or $4/kWh) and abundance on earth. The proposed system enables an enormous thermal energy storage density of ~1 MWh/m3 , which is 10e20 times higher than that of lead-acid batteries, 2e6 times than that of Li-ion batteries and 5e10 times than that of the current state of the art LHTES systems utilized in CSP (concentrated solar power) applications. The discharge efficiency of the system is ultimately determined by the TPV converter, which theoretically can exceed 50%. However, realistic discharge efficiencies utilizing single junction TPV cells are in the range of 20e45%, depending on the semiconductor bandgap and quality, and the photon recycling efficiency. This concept has the potential to achieve output electric energy densities in the range of 200e450 kWhe/m3, which is comparable to the best performing state of the art Lithium-ion batteries.
Internacional
Si
JCR del ISI
Si
Título de la revista
Energy
ISSN
0360-5442
Factor de impacto JCR
4,292
Información de impacto
Volumen
107
DOI
10.1016/j.energy.2016.04.048
Número de revista
Desde la página
542
Hasta la página
549
Mes
SIN MES
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Alejandro Datas Medina (UPM)
  • Autor: Alba Ramos Cabal (UPM)
  • Autor: Antonio Marti Vega (UPM)
  • Autor: Carlos del Cañizo Nadal (UPM)
  • Autor: Antonio Luque López
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
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